Computer control 30T cement pressure tester (fault phenomenon, cause and elimination method)


Computer control 30T cement pressure tester (fault phenomenon, cause and elimination method)


1, Pipe fittings at the leakage of oil

One of the reasons is that the sealing connection is loose, in which case the components should be properly assembled and tightened, the second reason is the seal damage, in this case the seal should be replaced with seals such as 0 seals, combination washers or clamp, when replacing seals with kerosene cleaning seals and fittings to prevent contaminants from entering the hydraulic system, damaging hydraulic components (Such as commutator valve, proportional valve).

2. Test Power Overshoot

The most important reason for the test force overshoot is that the control parameters are not accurate, first of all, we should consider whether the test force rise speed is correct, if not correct should modify the test force rise speed, and then see if the PID has been adjusted, if there is no should adjust the value of the PID.

3, The pressure does not go

Cause the pressure does not go the reason should first consider whether the commutator valve is stuck in the oil delivery position, this situation should be cleaned or replaced the commutator valve, and then see if the motor is reversed, if the power cord is any two FireWire position interchange, and finally should check whether the manual valve is in the oil return position, if the manual valve is placed in the hold position

4.Piston does not fall back

Check whether the commutator valve is stuck, if it is stuck should clean or replace the commutator valve, and then see if there is no signal to the sensor, if there should be no inspection of the electromagnetic commutator valve related to the reliability of the line connection and A/D card has no output.

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